The Rev. Robert E. Hannon, 79, of Honolulu, a retired Diocese Catholic priest, died in St. Francis-West Hospice. He was born in Oil City, Pa. He is survived by sisters Elizabeth Tucker, Lorraine Trampenau and Marian Mong. Mass: noon Saturday at Our Lady of Peace Cathedral, 1184 Bishop St. Call after 10:30 a.m. Graveside services: 3:30 p.m. Saturday at Hawaiian Memorial Park.